研究建立了采用原子荧光光谱仪测定金精矿中砷、汞、镉、铅、铋的方法。通过对比实验选择了水浴溶样法作为砷、汞、铋的预处理方法，选择了盐酸、硝酸、高氯酸和氢氟酸混酸溶样法作为砷、铋、镉、铅的预处理方法。经过条件实验分别确定了两种预处理方法的最小称样量、试剂用量、水浴溶样法溶样时间、混酸溶样法定容介质酸度等最佳实验条件。该方法加入标准物质回收率为92．54％～125．10％，精密度（RSD，n＝11）均小于10％，准确度小于8％。
The paper established a determination method of As,Hg,Cd,Pb and Bi in gold concentrates by AFS. Contrast test chose water bath dissolution as the pretreatment method of As,Hg and Bi,and the mixed acids dissolution with hydrochloric acid,nitric acid,perchloric acid and hydrofluoric acid for the pretreatment of As,Cd,Pb and Bi. Conditional experiments settled such optimal conditions as the minimum test portion weight,agent dosage,time for wa-ter bath dissolution and constant volume medium acidity respectively for the two pretreatment methods.The recovery rate with addition of standard substance is 92.54 % to 125.10 %,the precision rate(RSD,n=11) is less than 10%,and accuracy is less than 8 %.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%